TESTUDINID^. 105 



the 5th and 6th costals ; entoplastral bone cut by the sulcus 

 dividing the humeral and pectoral shields. Xiphiplastrals notched. 

 The vertebral shields are hexagonal and elongated in the adult ; 

 a nuchal shield is nearly always present ; and the palate has no 

 median ridge on the oral surface of the maxillae. 



J9amoma Jjamtltont, Gray K 



Syn. Emys hamiltoni, Gray 2 . 



Clemmys hamiltoni, Strauch 3 . 

 Clemmys palceindica, Lydekker 4 . 



The type species. Carapace much vaulted, with three interrupted 

 nodose keels ; posterior border serrated ; nuchal shield narrowing 

 in front ; 1st vertebral usually not wider in front than behind. 

 Plastron large, angulated laterally, and truncated anteriorly, with 

 the postinguinal portion long, narrow, and deeply notched. 



It appears that the fossil specimens described as Clemmys palce- 

 indica are not specifically separable, although they attain larger 

 dimensions than the living examples, in which the length of the 

 carapace reaches 0,220 (8-7 inches). 



Eab. India (Bengal, Punjab, and Sind). 



39840. An immature shell, imperfect posteriorly; from the Pliocene 

 {Fig.) of the Siwalik Hills. Figured by the writer in the 



' Palseontologia Indica,' ser. 10, vol. iii. pi. xxi. figs. 1, 



la, lb (as C. palceindica) . 



Cautley Collection. Presented, 1840. 



39838. The shell of an adult individual; from the Siwalik Hills. 



{Fig.) Figured by the writer, op>. cit. pi. xxi. figs. 3, 3a (as C. 



palaiindica). Cautley Collection. 



R. 887. The anterior portion of the shell of a very large individual ; 

 from the Siwalik s. The carapace wants the whole of the 

 portion posterior to the middle of the 5th neural, the por- 

 tion preserved being imperfect on the left side. Both the 

 sutures of the bones and the sulci of the shields are dis- 

 tinctly shown. The plastron shows the imperfect hyo- 

 and hypoplastrals. This specimen is considerably larger 

 than any existing example. Cautley Collection. 



1 Synopsis Reptilium, p. 21 (1831).— Emys. 2 Loc. cit. 



3 Chelonologische Studien, p. 32 (1862). 



4 Palaeontologia Indica (Mem. Geol. Surv. Ind.), ser. 10, vol. iii. p. 178 

 (1885). 



